Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Discover how to boost your browsing speed and save battery life with Microsoft Edge's performance features, such as sleeping tabs and efficiency mode.

The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs.

Get help with your questions about Microsoft Teams from our how-to articles, tutorials, and support content.

Warning: Excel provides the DATEDIF function in order to support older workbooks from Lotus 1-2-3.The DATEDIF function may calculate incorrect results under certain scenarios. Please see the known issues section of this article for further details.

How to use the COUNTIFS function in Excel to apply criteria to cells, across multiple ranges, and count the number of times all criteria are met.

How to access your Microsoft account? If you have confirmed that your email is a Microsoft account, you can access it by following these steps:

Learn how to remap buttons, adjust stick sensitivity, and update firmware for your Xbox Elite Wireless Controller Series 2.

Try these troubleshooting steps if Microsoft Store does not launch in Windows 10.

Learn how to record Teams meeting. Capture audio, video, screen sharing activity, and troubleshoot recordings in Microsoft Teams.